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FCC Station Class Codes


Station class codes describe the purpose for which a particlular station is used. The most common ones are:

  • FB - Base Station - A station at a specified site authorized to communicate with mobile stations.
  • MO - Mobile Station - A station in the mobile service intended to be used while in motion or during halts at unspecified points. This includes hand carried transmitters and, with certain limitations, may also include boats and aircraft.
  • FB2 - Mobile Relay - A repeater.
  • FX1 - Control Station - A base station that operates through a repeater in the same way as a mobile station.
  • FXO - Operational Fixed Station - A transceiver which may operate as a link between two or more fixed locations. The designator is often used in radio link or SCADA telemetry systems.
  • FB4 - Community Repeater - A conventional repeater which is usually stand-alone (no connection to other sites or repeaters) and operates multiple CTCSS or CDCSS tones, or possibly a single-frequency LTR repeater which accommodates multiple subscribers. These subscribers need to be licensed individually to use their respective tone, code, or LTR talkgroup.
  • FB6 - Private Carrier (profit) - A repeater operated by a radio communications provider for multiple subscribers who are covered under the carrier's license.
  • FB7 - Private Carrier (non-profit) - A repeater operated by a not-for-profit entity for multiple subscribers who are covered under the entity's license.
  • FB8 - Centralized Trunk Relay - A repeater operating within a centralized trunked radio system which has exclusive use of the designated frequency within a given geographic area. The designation is used between 150 - 512 MHz and may indicate a variety of technologies including analog, P25, 2-slot DMR (MOTOTRBO), NXDN, or other centralized trunking scheme. The use of FB8 on T-Band is seen, but is redundant, as T-Band systems which meet channel loading criteria already have geographic exclusivity. A T-Band trunked system should rather use FB2 instead, with trunking operation indicated as a YW in the Radio Service field.
  • MO8 - Trunked Subscriber Unit - A mobile or hand-held transceiver operating in a centralized trunked radio system within an exclusive geographic area. This designation is used between 150 - 512 MHz to indicate that the frequency corresponds to an exclusive trunked system.


  • Interconnect - A connection to the telephone network to allow radio users to make or receive telephone calls. Also called a phone patch. These stations are usually indicated by a "C" appended to the station class code.
  • Itinerant - A station that is operated temporarily at different locations. These stations are usually indicated by an "I" appended to the station class code.


FCC Station Class Codes
Code Description
AOXOperational Fixed
APCALASKA PUBLIC
APXALASKA PRIVATE
APX2ALASKA PRIVATE (TEMPORARY)
AX AERONAUTICAL FIXED
AX1AERONAUTICAL FIXED (MOBILE)
AX2AERONAUTICAL FIXED (TEMPORARY)
DGPDIFFERENTIAL GPS
ELTELT TEST
ELT1ELT TEST (MOBILE)
FA AERONAUTICAL ENROUTE
FA1AERONAUTICAL ENROUTE (MOBILE)
FA2AERONAUTICAL ENROUTE (TEMPORARY)
FAAAERONAUTICAL ADVISORY (UNICOM)
FAA1AERONAUTICAL ADVISORY (UNICOM) (MOBILE)
FAA2AERONAUTICAL ADVISORY (UNICOM) (TEMPORARY)
FABAUTOMATIC WEATHER OBSERVATION
FACAIRPORT CONTROL TOWER
FASAVIATION SUPPORT INSTRUCTIONAL
FAS1AVIATION SUPPORT INSTRUCTIONAL (MOBILE)
FATFLIGHT TEST
FAT1FLIGHT TEST (MOBILE)
FAT3FLIGHT TEST (ITINERANT)
FB Base
FB2Mobile Relay
FB2AMobile Relay - Airport Terminal Use
FB2CMobile Relay - Interconnect
FB2IMobile Relay - Itinerant
FB2JMobile Relay - Temporary Interconnect
FB2KMobile Relay - Stand-by Interconnect
FB2LMobile Relay - Itinerant Interconnect
FB2SMobile Relay - Stand-by
FB2TMobile Relay - Temporary
FB4Community Repeater
FB4ACommunity Repeater - Airport Terminal Use
FB4CCommunity Repeater - Interconnect
FB4ICommunity Repeater - Itinerant
FB4JCommunity Repeater - Temporary Interconnect
FB4KCommunity Repeater - Stand-by Interconnect
FB4LCommunity Repeater - Itinerant Interconnect
FB4SCommunity Repeater - Stand-by
FB4TCommunity Repeater - Temporary
FB6Private Carrier (profit)
FB6APrivate Carrier (profit) - Airport Terminal Use
FB6CPrivate Carrier (profit) - Interconnect
FB6IPrivate Carrier (profit) - Itinerant
FB6JPrivate Carrier (profit) - Temporary Interconn
FB6KPrivate Carrier (profit) - Stand-by Interconne
FB6LPrivate Carrier (profit) - Itinerant Interconn
FB6SPrivate Carrier (profit) - Stand-by
FB6TPrivate Carrier (profit) - Temporary
FB7Private Carrier (non-profit)
FB7APrivate Carrier (non-profit) - Airport Terminal Use
FB7CPrivate Carrier (non-profit) - Interconnect
FB7IPrivate Carrier (non-profit) - Itinerant
FB7JPrivate Carrier (non-profit) - Temporary Inter
FB7KPrivate Carrier (non-profit) - Stand-by Interc
FB7LPrivate Carrier (non-profit) - Itinerant Inter
FB7SPrivate Carrier (non-profit) - Stand-by
FB7TPrivate Carrier (non-profit) - Temporary
FB8Centralized Trunk Relay
FB8ACentralized Trunk Relay - Airport Terminal Use
FB8CCentralized Trunk Relay - Interconnect
FB8ICentralized Trunk Relay - Itinerant
FB8JCentralized Trunk Relay - Temporary Interconnect
FB8KCentralized Trunk Relay - Standby Interconnect
FB8LCentralized Trunk Relay - Itinerant Interconnect
FB8SCentralized Trunk Relay - Standby
FB8TCentralized Trunk Relay - Temporary
FBABase - Airport Terminal Use
FBATSmall Base - Temporary
FBBSBase
FBCBase - Interconnect
FBCTFBCT
FBGSGround
FBIBase - Itinerant
FBJBase - Temporary Interconnect
FBKBase - Stand-by Interconnect
FBLBase - Itinerant Interconnect
FBSBase - Stand-by
FBSIAir-ground Signaling
FBSTStandby
FBTBase - Temporary
FC PUBLIC COAST
FC2PUBLIC COAST(TEMPORARY)
FCAMARINE SUPPORT-TESTING & TRAINING
FCA2MARINE SUPPORT-TESTING & TRAINING (TEMPORARY)
FCLPRIVATE COAST
FCL2PRIVATE COAST (TEMPORARY)
FCUMARINE UTILITY
FCU1MARINE UTILITY (MOBILE)
FISFlight Information Services
FIS1Flight Information Services with Hand Held/Mobile
FIS2Flight Information Services for Temporary Operatio
FLTAuxiliary Test
FLTCAuxiliary Test - Interconnect
FLTIAuxiliary Test - Itinerant
FLTLAuxiliary Test - Itinerant Interconnect
FLUAVIATION SUPPORT SERVICE
FLU1AVIATION SUPPORT SERVICE (MOBILE)
FMA1AIRCRAFT FLIGHT TEST STATION
FX Fixed
FX1Control
FX1AControl - Airport Terminal Use
FX1CControl - Interconnect
FX1IControl - Itinerant
FX1JControl - Temporary Interconnect
FX1KControl - Stand-by Interconnect
FX1LControl - Itinerant Interconnect
FX1SControl - Stand-by
FX1TControl - Temporary
FX2Fixed Relay
FX2AFixed Relay - Airport Terminal Use
FX2CFixed Relay - Interconnect
FX2IFixed Relay - Itinerant
FX2JFixed Relay - Temporary Interconnect
FX2KFixed Relay - Stand-by Interconnect
FX2LFixed Relay - Itinerant Interconnect
FX2SFixed Relay - Stand-by
FX2TFixed Relay - Temporary
FX3Secondary Fixed (Tone Signalling)
FX3ASecondary Fixed - Airport Terminal Use
FX3CSecondary Fixed - Interconnect
FX3ISecondary Fixed - Itinerant
FX3JSecondary Fixed - Temporary Interconnect
FX3KSecondary Fixed - Stand-by Interconnect
FX3LSecondary Fixed - Itinerant Interconnect
FX3SSecondary Fixed - Stand-by
FX3TSecondary Fixed - Temporary
FX5Temporary Fixed
FXAFixed - Airport Terminal Use
FXBPrimary Permanent Fixed Stations or Links
FXCFixed - Interconnect
FXCOCentral Office
FXCTControl
FXDIDispatch
FXIFixed - Itinerant
FXIOInter-office
FXJFixed - Temporary Interconnect
FXKFixed - Stand-by Interconnect
FXLFixed - Itinerant Interconnect
FXOOperational Fixed
FXOAFixed - Interconnect - Airport Terminal Use
FXOCOperational Fixed - Interconnect
FXOIOperational Fixed - Itinerant
FXOJOperational Fixed - Temporary Interconnect
FXOKOperational Fixed - Stand-by Interconnect
FXOLOperational Fixed - Itinerant Interconnect
FXOSOperational Fixed - Stand-by
FXOTOperational Fixed - Temporary
FXRPRepeater
FXRXFixed Relay
FXSFixed - Stand-by
FXSBFixed Subscriber
FXTFixed - Temporary
FXTSAuxiliary Test
FXVCTS Exceeding 20'
FXWCTS Meeting 20'
FXYInterzone
FXYCInterzone - Interconnect
FXZZone
FXZCZone - Interconnect
GCOGROUND COMMUNICATIONS OUTLET
LR Radiolocation Land
LRCRadiolocation Land - Interconnect
LRJRadiolocation Land - Temporary Interconnect
LRKRadiolocation Land - Stand-by Interconnect
LRSRadiolocation Land - Stand-by
LRTRadiolocation Land - Temporary
MFLAERONAUTICAL MULTICOM
MFL1AERONAUTICAL MULTICOM (MOBILE)
MFL2AERONAUTICAL MULTICOM (TEMPORARY)
MFXMARINE OPS FIXED
MFX2MARINE OPS FIXED (TEMPORARY)
MLSBMobile Subscriber
MO Mobile
MO3Vehicular Repeater
MO3AVehicular Repeater - Airport Terminal Use
MO3CVehicular Repeater with Interconnect
MO3IVehicular Repeater - Itinerant
MO3JVehicular Repeater with Temporary Interconnect
MO3KVehicular Repeater with Stand-by Interconnect
MO3LVehicular Repeater with Itinerant Interconnect
MO3SStand-by Vehicular Repeater
MO3TTemporary Vehicular Repeater
MO5Mobile & Temporary Fixed
MO6Private Carrier Mobile Operation (profit)
MO6APrivate Carrier Mobile Operation (profit) - Airport Terminal Use
MO6CPrivate Carrier Mobile Operation (profit) - Interconnect
MO6IPrivate Carrier Mobile Operation (profit) - Itinerant
MO6JPrivate Carrier Mobile Operation (profit) with Temporary Interconnect
MO6KPrivate Carrier Mobile Operation (profit) with Stand-by Interconnect
MO6LPrivate Carrier Mobile Operation (profit) with Itinerant Interconnect
MO6SPrivate Carrier Mobile Operation (profit) - Stand-by
MO6TTemporary Private Carrier Mobile Operation (profit)
MO7Private Carrier Mobile Operation (non-profit)
MO7APrivate Carrier Mobile Operation (non-profit) - Airport Terminal Use
MO7CPrivate Carrier Mobile Operation (non-profit) - Interconnect
MO7IPrivate Carrier Mobile Operation (non-profit) - Itinerant
MO7JPrivate Carrier Mobile Operation (non-profit) with Temporary Interconnect
MO7KPrivate Carrier Mobile Operation (non-profit) with Stand-by Interconnect
MO7LPrivate Carrier Mobile Operation (non-profit) with Itinerant Interconnect
MO7SPrivate Carrier Mobile Operation (non-profit) - Stand-by
MO7TTemporary Private Carrier Mobile Operation (non-profit)
MO8Centralized Trunk Mobile
MO8ACentralized Trunk Mobile - Airport Terminal Use
MO8CCentralized Trunk Mobile - Interconnect
MOAMobile - Airport Terminal Use
MOCMobile - Interconnect
MOIMobile - Itinerant
MOJMobile with Temporary Interconnect
MOKMobile with Stand-by Interconnect
MOLMobile with Itinerant Interconnect
MOSMobile - Stand-by
MOTMobile - Temporary
MOU1AERONAUTICAL UTILITY MOBILE
MR Radiolocation Mobile
MRTMARINE RECEIVER TEST
MRT2MARINE RECEIVER TEST (TEMPORARY)
MSCSHORE RADAR TEST
MSC2SHORE RADAR TEST (TEMPORARY)
MSRSHORE RADIONAVIGATION
MSR2SHORE RADIONAVIGATION (TEMPORARY)
RCOREMOTE COMMUNICATIONS OUTLET
RLAAERONAUTICAL MARKER BEACON
RLA1AERONAUTICAL MARKER BEACON (MOBILE)
RLA2AERONAUTICAL MARKER BEACON (TEMPORARY)
RLBAERONAUTICAL RADIO BEACON
RLB1AERONAUTICAL RADIO BEACON (MOBILE)
RLB2AERONAUTICAL RADIO BEACON (TEMPORARY)
RLCSHORE RADIOLOCATION TEST
RLC2SHORE RADIOLOCATION TEST (TEMPORARY)
RLDRADAR/RADAR TEST
RLD1RADAR/RADAR TEST (MOBILE)
RLD2RADAR/RADAR TEST (TEMPORARY)
RLGGLIDE PATH (SLOPE)
RLG1GLIDE PATH (SLOPE) (MOBILE)
RLG2GLIDE PATH (SLOPE) (TEMPORARY)
RLLLOCALIZER
RLL1LOCALIZER (MOBILE)
RLL2LOCALIZER (TEMPORARY)
RLOOMNIDIRECTIONAL RADIO RANGE
RLO1OMNIDIRECTIONAL RADIO RANGE (MOBILE)
RLO2OMNIDIRECTIONAL RADIO RANGE (TEMPORARY)
RLRSHORE RADIOLOCATION/RACON
RLR2SHORE RADIOLOCATION/RACON (TEMPORARY)
RLTRADIONAVIGATION LAND TEST
RLT1RADIONAVIGATION LAND TEST (MOBILE)
RLT2Radionavigation Land Test - Temporary
RNVRADIONAVIGATION LAND
RNV1RADIONAVIGATION LAND (MOBILE)
RNV2RADIONAVIGATION LAND (TEMPORARY)
RPCRAMP CONTROL
SARSEARCH AND RESCUE
SAR1SEARCH AND RESCUE (MOBILE)
UATUniversal Access Transceiver service - Fixed
UAT1Universal Access Transceiver service - Mobile
UAT2Universal Access Transceiver service - Temporary Fixed
WDXRadiolocation Weather Radar
WDXSRadiolocation Weather Radar - Standby
WDXTRadiolocation Weather Radar - Temporary


*FXO or FXB on 4.9 GHz?

4.9 GHz systems installed at permanent locations must be licensed to the particular sites they will be used at. In FCC 09-29, the Commission afforded priority to 4.9 GHz systems carrying broadband data versus those that did not. To differentiate primary or secondary status, in DA 09-2530, the Commission retasked the station class code FXB to indicate "broadband" and primary status. The legacy code, FXO now indicates secondary status for 4.9 GHz links only. This primary/secondary status for broadband does not apply to any other frequency band or use. Broadband can practically be carrying VoIP E9-1-1 and Computer Aided Dispatch traffic to and from remote PSAPs, or can be supplying transport to and from future generation LTE eNode-B stations. Discrete voice radio traffic itself does not fit the Commission's "broadband" qualifier, but radio traffic digitized and multiplexed into other data can.

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